FRS Alternator Plug
 

Any of you guys wiring up the FRS Alternator plug?? If so,,, how?? It's A43, purple, orange and blue with red stripe??

Thanks!!!!

Look up wiring for a 3-wire alternator. There’s usually.

Field (FR) that goes to a switched +12v source
Signal (S) which is going to a +12v source with high load, I usually wire it to a fuse block, basically this wire is what tells the alternator what the current power is so it can regulate voltage.
Lamp(L) here you would put a charging diode with the negative end to lamp and the positive end tied into +12v switched power I typically use the FR wire. Without this the alternator will never charge


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The frs alternator is probably the same as the sti/wrx which I have the wiring for, the colors might not be exactly the same.


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